]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - usr.sbin/vidcontrol/vidcontrol.c
Add UPDATING entries and bump version.
[FreeBSD/FreeBSD.git] / usr.sbin / vidcontrol / vidcontrol.c
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1994-1996 Søren Schmidt
5  * All rights reserved.
6  *
7  * Portions of this software are based in part on the work of
8  * Sascha Wildner <saw@online.de> contributed to The DragonFly Project
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer,
15  *    in this position and unchanged.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. The name of the author may not be used to endorse or promote products
20  *    derived from this software without specific prior written permission
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  *
33  * $DragonFly: src/usr.sbin/vidcontrol/vidcontrol.c,v 1.10 2005/03/02 06:08:29 joerg Exp $
34  */
35
36 #ifndef lint
37 static const char rcsid[] =
38   "$FreeBSD$";
39 #endif /* not lint */
40
41 #include <ctype.h>
42 #include <err.h>
43 #include <limits.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <unistd.h>
48 #include <sys/fbio.h>
49 #include <sys/consio.h>
50 #include <sys/endian.h>
51 #include <sys/errno.h>
52 #include <sys/param.h>
53 #include <sys/types.h>
54 #include <sys/stat.h>
55 #include <sys/sysctl.h>
56 #include "path.h"
57 #include "decode.h"
58
59
60 #define DATASIZE(x)     ((x).w * (x).h * 256 / 8)
61
62 /* Screen dump modes */
63 #define DUMP_FMT_RAW    1
64 #define DUMP_FMT_TXT    2
65 /* Screen dump options */
66 #define DUMP_FBF        0
67 #define DUMP_ALL        1
68 /* Screen dump file format revision */
69 #define DUMP_FMT_REV    1
70
71 static const char *legal_colors[16] = {
72         "black", "blue", "green", "cyan",
73         "red", "magenta", "brown", "white",
74         "grey", "lightblue", "lightgreen", "lightcyan",
75         "lightred", "lightmagenta", "yellow", "lightwhite"
76 };
77
78 static struct {
79         int                     active_vty;
80         vid_info_t              console_info;
81         unsigned char           screen_map[256];
82         int                     video_mode_number;
83         struct video_info       video_mode_info;
84 } cur_info;
85
86 struct vt4font_header {
87         uint8_t         magic[8];
88         uint8_t         width;
89         uint8_t         height;
90         uint16_t        pad;
91         uint32_t        glyph_count;
92         uint32_t        map_count[4];
93 } __packed;
94
95 static int      hex = 0;
96 static int      vesa_cols;
97 static int      vesa_rows;
98 static int      font_height;
99 static int      vt4_mode = 0;
100 static int      video_mode_changed;
101 static struct   video_info new_mode_info;
102
103
104 /*
105  * Initialize revert data.
106  *
107  * NOTE: the following parameters are not yet saved/restored:
108  *
109  *   screen saver timeout
110  *   cursor type
111  *   mouse character and mouse show/hide state
112  *   vty switching on/off state
113  *   history buffer size
114  *   history contents
115  *   font maps
116  */
117
118 static void
119 init(void)
120 {
121         if (ioctl(0, VT_GETACTIVE, &cur_info.active_vty) == -1)
122                 err(1, "getting active vty");
123
124         cur_info.console_info.size = sizeof(cur_info.console_info);
125         if (ioctl(0, CONS_GETINFO, &cur_info.console_info) == -1)
126                 err(1, "getting console information");
127
128         /* vt(4) use unicode, so no screen mapping required. */
129         if (vt4_mode == 0 &&
130             ioctl(0, GIO_SCRNMAP, &cur_info.screen_map) == -1)
131                 err(1, "getting screen map");
132
133         if (ioctl(0, CONS_GET, &cur_info.video_mode_number) == -1)
134                 err(1, "getting video mode number");
135
136         cur_info.video_mode_info.vi_mode = cur_info.video_mode_number;
137
138         if (ioctl(0, CONS_MODEINFO, &cur_info.video_mode_info) == -1)
139                 err(1, "getting video mode parameters");
140 }
141
142
143 /*
144  * If something goes wrong along the way we call revert() to go back to the
145  * console state we came from (which is assumed to be working).
146  *
147  * NOTE: please also read the comments of init().
148  */
149
150 static void
151 revert(void)
152 {
153         int save_errno, size[3];
154
155         save_errno = errno;
156
157         ioctl(0, VT_ACTIVATE, cur_info.active_vty);
158
159         ioctl(0, KDSBORDER, cur_info.console_info.mv_ovscan);
160         fprintf(stderr, "\033[=%dH", cur_info.console_info.mv_rev.fore);
161         fprintf(stderr, "\033[=%dI", cur_info.console_info.mv_rev.back);
162
163         if (vt4_mode == 0)
164                 ioctl(0, PIO_SCRNMAP, &cur_info.screen_map);
165
166         if (video_mode_changed) {
167                 if (cur_info.video_mode_number >= M_VESA_BASE)
168                         ioctl(0,
169                             _IO('V', cur_info.video_mode_number - M_VESA_BASE),
170                             NULL);
171                 else
172                         ioctl(0, _IO('S', cur_info.video_mode_number), NULL);
173                 if (cur_info.video_mode_info.vi_flags & V_INFO_GRAPHICS) {
174                         size[0] = cur_info.video_mode_info.vi_width / 8;
175                         size[1] = cur_info.video_mode_info.vi_height /
176                             cur_info.console_info.font_size;
177                         size[2] = cur_info.console_info.font_size;
178                         ioctl(0, KDRASTER, size);
179                 }
180         }
181
182         /* Restore some colors last since mode setting forgets some. */
183         fprintf(stderr, "\033[=%dF", cur_info.console_info.mv_norm.fore);
184         fprintf(stderr, "\033[=%dG", cur_info.console_info.mv_norm.back);
185
186         errno = save_errno;
187 }
188
189
190 /*
191  * Print a short usage string describing all options, then exit.
192  */
193
194 static void
195 usage(void)
196 {
197         if (vt4_mode)
198                 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n",
199 "usage: vidcontrol [-CHPpx] [-b color] [-c appearance] [-f [[size] file]]",
200 "                  [-g geometry] [-h size] [-i active | adapter | mode]",
201 "                  [-M char] [-m on | off]",
202 "                  [-r foreground background] [-S on | off] [-s number]",
203 "                  [-T xterm | cons25] [-t N | off] [mode]",
204 "                  [foreground [background]] [show]");
205         else
206                 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n",
207 "usage: vidcontrol [-CdHLPpx] [-b color] [-c appearance] [-f [size] file]",
208 "                  [-g geometry] [-h size] [-i active | adapter | mode]",
209 "                  [-l screen_map] [-M char] [-m on | off]",
210 "                  [-r foreground background] [-S on | off] [-s number]",
211 "                  [-T xterm | cons25] [-t N | off] [mode]",
212 "                  [foreground [background]] [show]");
213         exit(1);
214 }
215
216 /* Detect presence of vt(4). */
217 static int
218 is_vt4(void)
219 {
220         char vty_name[4] = "";
221         size_t len = sizeof(vty_name);
222
223         if (sysctlbyname("kern.vty", vty_name, &len, NULL, 0) != 0)
224                 return (0);
225         return (strcmp(vty_name, "vt") == 0);
226 }
227
228 /*
229  * Retrieve the next argument from the command line (for options that require
230  * more than one argument).
231  */
232
233 static char *
234 nextarg(int ac, char **av, int *indp, int oc, int strict)
235 {
236         if (*indp < ac)
237                 return(av[(*indp)++]);
238
239         if (strict != 0) {
240                 revert();
241                 errx(1, "option requires two arguments -- %c", oc);
242         }
243
244         return(NULL);
245 }
246
247
248 /*
249  * Guess which file to open. Try to open each combination of a specified set
250  * of file name components.
251  */
252
253 static FILE *
254 openguess(const char *a[], const char *b[], const char *c[], const char *d[], char **name)
255 {
256         FILE *f;
257         int i, j, k, l;
258
259         for (i = 0; a[i] != NULL; i++) {
260                 for (j = 0; b[j] != NULL; j++) {
261                         for (k = 0; c[k] != NULL; k++) {
262                                 for (l = 0; d[l] != NULL; l++) {
263                                         asprintf(name, "%s%s%s%s",
264                                                  a[i], b[j], c[k], d[l]);
265
266                                         f = fopen(*name, "r");
267
268                                         if (f != NULL)
269                                                 return (f);
270
271                                         free(*name);
272                                 }
273                         }
274                 }
275         }
276         return (NULL);
277 }
278
279
280 /*
281  * Load a screenmap from a file and set it.
282  */
283
284 static void
285 load_scrnmap(const char *filename)
286 {
287         FILE *fd;
288         int size;
289         char *name;
290         scrmap_t scrnmap;
291         const char *a[] = {"", SCRNMAP_PATH, NULL};
292         const char *b[] = {filename, NULL};
293         const char *c[] = {"", ".scm", NULL};
294         const char *d[] = {"", NULL};
295
296         fd = openguess(a, b, c, d, &name);
297
298         if (fd == NULL) {
299                 revert();
300                 errx(1, "screenmap file not found");
301         }
302
303         size = sizeof(scrnmap);
304
305         if (decode(fd, (char *)&scrnmap, size) != size) {
306                 rewind(fd);
307
308                 if (fread(&scrnmap, 1, size, fd) != (size_t)size) {
309                         fclose(fd);
310                         revert();
311                         errx(1, "bad screenmap file");
312                 }
313         }
314
315         if (ioctl(0, PIO_SCRNMAP, &scrnmap) == -1) {
316                 revert();
317                 err(1, "loading screenmap");
318         }
319
320         fclose(fd);
321 }
322
323
324 /*
325  * Set the default screenmap.
326  */
327
328 static void
329 load_default_scrnmap(void)
330 {
331         scrmap_t scrnmap;
332         int i;
333
334         for (i=0; i<256; i++)
335                 *((char*)&scrnmap + i) = i;
336
337         if (ioctl(0, PIO_SCRNMAP, &scrnmap) == -1) {
338                 revert();
339                 err(1, "loading default screenmap");
340         }
341 }
342
343
344 /*
345  * Print the current screenmap to stdout.
346  */
347
348 static void
349 print_scrnmap(void)
350 {
351         unsigned char map[256];
352         size_t i;
353
354         if (ioctl(0, GIO_SCRNMAP, &map) == -1) {
355                 revert();
356                 err(1, "getting screenmap");
357         }
358         for (i=0; i<sizeof(map); i++) {
359                 if (i != 0 && i % 16 == 0)
360                         fprintf(stdout, "\n");
361
362                 if (hex != 0)
363                         fprintf(stdout, " %02x", map[i]);
364                 else
365                         fprintf(stdout, " %03d", map[i]);
366         }
367         fprintf(stdout, "\n");
368
369 }
370
371
372 /*
373  * Determine a file's size.
374  */
375
376 static int
377 fsize(FILE *file)
378 {
379         struct stat sb;
380
381         if (fstat(fileno(file), &sb) == 0)
382                 return sb.st_size;
383         else
384                 return -1;
385 }
386
387 static vfnt_map_t *
388 load_vt4mappingtable(unsigned int nmappings, FILE *f)
389 {
390         vfnt_map_t *t;
391         unsigned int i;
392
393         if (nmappings == 0)
394                 return (NULL);
395
396         if ((t = calloc(nmappings, sizeof(*t))) == NULL) {
397                 warn("calloc");
398                 return (NULL);
399         }
400
401         if (fread(t, sizeof *t * nmappings, 1, f) != 1) {
402                 warn("read mappings");
403                 free(t);
404                 return (NULL);
405         }
406
407         for (i = 0; i < nmappings; i++) {
408                 t[i].src = be32toh(t[i].src);
409                 t[i].dst = be16toh(t[i].dst);
410                 t[i].len = be16toh(t[i].len);
411         }
412
413         return (t);
414 }
415
416 /*
417  * Set the default vt font.
418  */
419
420 static void
421 load_default_vt4font(void)
422 {
423         if (ioctl(0, PIO_VFONT_DEFAULT) == -1) {
424                 revert();
425                 err(1, "loading default vt font");
426         }
427 }
428
429 static void
430 load_vt4font(FILE *f)
431 {
432         struct vt4font_header fh;
433         static vfnt_t vfnt;
434         size_t glyphsize;
435         unsigned int i;
436
437         if (fread(&fh, sizeof fh, 1, f) != 1) {
438                 warn("read file_header");
439                 return;
440         }
441
442         if (memcmp(fh.magic, "VFNT0002", 8) != 0) {
443                 warnx("bad magic in font file\n");
444                 return;
445         }
446
447         for (i = 0; i < VFNT_MAPS; i++)
448                 vfnt.map_count[i] = be32toh(fh.map_count[i]);
449         vfnt.glyph_count = be32toh(fh.glyph_count);
450         vfnt.width = fh.width;
451         vfnt.height = fh.height;
452
453         glyphsize = howmany(vfnt.width, 8) * vfnt.height * vfnt.glyph_count;
454         if ((vfnt.glyphs = malloc(glyphsize)) == NULL) {
455                 warn("malloc");
456                 return;
457         }
458
459         if (fread(vfnt.glyphs, glyphsize, 1, f) != 1) {
460                 warn("read glyphs");
461                 free(vfnt.glyphs);
462                 return;
463         }
464
465         for (i = 0; i < VFNT_MAPS; i++)
466                 vfnt.map[i] = load_vt4mappingtable(vfnt.map_count[i], f);
467
468         if (ioctl(STDIN_FILENO, PIO_VFONT, &vfnt) == -1)
469                 warn("PIO_VFONT");
470
471         for (i = 0; i < VFNT_MAPS; i++)
472                 free(vfnt.map[i]);
473         free(vfnt.glyphs);
474 }
475
476 /*
477  * Load a font from file and set it.
478  */
479
480 static void
481 load_font(const char *type, const char *filename)
482 {
483         FILE    *fd;
484         int     h, i, size, w;
485         unsigned long io = 0;   /* silence stupid gcc(1) in the Wall mode */
486         char    *name, *fontmap, size_sufx[6];
487         const char      *a[] = {"", FONT_PATH, NULL};
488         const char      *vt4a[] = {"", VT_FONT_PATH, NULL};
489         const char      *b[] = {filename, NULL};
490         const char      *c[] = {"", size_sufx, NULL};
491         const char      *d[] = {"", ".fnt", NULL};
492         vid_info_t info;
493
494         struct sizeinfo {
495                 int w;
496                 int h;
497                 unsigned long io;
498         } sizes[] = {{8, 16, PIO_FONT8x16},
499                      {8, 14, PIO_FONT8x14},
500                      {8,  8,  PIO_FONT8x8},
501                      {0,  0,            0}};
502
503         if (vt4_mode) {
504                 size_sufx[0] = '\0';
505         } else {
506                 info.size = sizeof(info);
507                 if (ioctl(0, CONS_GETINFO, &info) == -1) {
508                         revert();
509                         err(1, "getting console information");
510                 }
511
512                 snprintf(size_sufx, sizeof(size_sufx), "-8x%d", info.font_size);
513         }
514         fd = openguess((vt4_mode == 0) ? a : vt4a, b, c, d, &name);
515
516         if (fd == NULL) {
517                 revert();
518                 errx(1, "%s: can't load font file", filename);
519         }
520
521         if (vt4_mode) {
522                 load_vt4font(fd);
523                 fclose(fd);
524                 return;
525         }
526
527         if (type != NULL) {
528                 size = 0;
529                 if (sscanf(type, "%dx%d", &w, &h) == 2) {
530                         for (i = 0; sizes[i].w != 0; i++) {
531                                 if (sizes[i].w == w && sizes[i].h == h) {
532                                         size = DATASIZE(sizes[i]);
533                                         io = sizes[i].io;
534                                         font_height = sizes[i].h;
535                                 }
536                         }
537                 }
538                 if (size == 0) {
539                         fclose(fd);
540                         revert();
541                         errx(1, "%s: bad font size specification", type);
542                 }
543         } else {
544                 /* Apply heuristics */
545
546                 int j;
547                 int dsize[2];
548
549                 size = DATASIZE(sizes[0]);
550                 fontmap = (char*) malloc(size);
551                 dsize[0] = decode(fd, fontmap, size);
552                 dsize[1] = fsize(fd);
553                 free(fontmap);
554
555                 size = 0;
556                 for (j = 0; j < 2; j++) {
557                         for (i = 0; sizes[i].w != 0; i++) {
558                                 if (DATASIZE(sizes[i]) == dsize[j]) {
559                                         size = dsize[j];
560                                         io = sizes[i].io;
561                                         font_height = sizes[i].h;
562                                         j = 2;  /* XXX */
563                                         break;
564                                 }
565                         }
566                 }
567
568                 if (size == 0) {
569                         fclose(fd);
570                         revert();
571                         errx(1, "%s: can't guess font size", filename);
572                 }
573
574                 rewind(fd);
575         }
576
577         fontmap = (char*) malloc(size);
578
579         if (decode(fd, fontmap, size) != size) {
580                 rewind(fd);
581                 if (fsize(fd) != size ||
582                     fread(fontmap, 1, size, fd) != (size_t)size) {
583                         fclose(fd);
584                         free(fontmap);
585                         revert();
586                         errx(1, "%s: bad font file", filename);
587                 }
588         }
589
590         if (ioctl(0, io, fontmap) == -1) {
591                 revert();
592                 err(1, "loading font");
593         }
594
595         fclose(fd);
596         free(fontmap);
597 }
598
599
600 /*
601  * Set the timeout for the screensaver.
602  */
603
604 static void
605 set_screensaver_timeout(char *arg)
606 {
607         int nsec;
608
609         if (!strcmp(arg, "off")) {
610                 nsec = 0;
611         } else {
612                 nsec = atoi(arg);
613
614                 if ((*arg == '\0') || (nsec < 1)) {
615                         revert();
616                         errx(1, "argument must be a positive number");
617                 }
618         }
619
620         if (ioctl(0, CONS_BLANKTIME, &nsec) == -1) {
621                 revert();
622                 err(1, "setting screensaver period");
623         }
624 }
625
626 static void
627 parse_cursor_params(char *param, struct cshape *shape)
628 {
629         char *dupparam, *word;
630         int type;
631
632         param = dupparam = strdup(param);
633         type = shape->shape[0];
634         while ((word = strsep(&param, ",")) != NULL) {
635                 if (strcmp(word, "normal") == 0)
636                         type = 0;
637                 else if (strcmp(word, "destructive") == 0)
638                         type = CONS_BLINK_CURSOR | CONS_CHAR_CURSOR;
639                 else if (strcmp(word, "blink") == 0)
640                         type |= CONS_BLINK_CURSOR;
641                 else if (strcmp(word, "noblink") == 0)
642                         type &= ~CONS_BLINK_CURSOR;
643                 else if (strcmp(word, "block") == 0)
644                         type &= ~CONS_CHAR_CURSOR;
645                 else if (strcmp(word, "noblock") == 0)
646                         type |= CONS_CHAR_CURSOR;
647                 else if (strcmp(word, "hidden") == 0)
648                         type |= CONS_HIDDEN_CURSOR;
649                 else if (strcmp(word, "nohidden") == 0)
650                         type &= ~CONS_HIDDEN_CURSOR;
651                 else if (strncmp(word, "base=", 5) == 0)
652                         shape->shape[1] = strtol(word + 5, NULL, 0);
653                 else if (strncmp(word, "height=", 7) == 0)
654                         shape->shape[2] = strtol(word + 7, NULL, 0);
655                 else if (strcmp(word, "charcolors") == 0)
656                         type |= CONS_CHARCURSOR_COLORS;
657                 else if (strcmp(word, "mousecolors") == 0)
658                         type |= CONS_MOUSECURSOR_COLORS;
659                 else if (strcmp(word, "default") == 0)
660                         type |= CONS_DEFAULT_CURSOR;
661                 else if (strcmp(word, "shapeonly") == 0)
662                         type |= CONS_SHAPEONLY_CURSOR;
663                 else if (strcmp(word, "local") == 0)
664                         type |= CONS_LOCAL_CURSOR;
665                 else if (strcmp(word, "reset") == 0)
666                         type |= CONS_RESET_CURSOR;
667                 else if (strcmp(word, "show") == 0)
668                         printf("flags %#x, base %d, height %d\n",
669                             type, shape->shape[1], shape->shape[2]);
670                 else {
671                         revert();
672                         errx(1,
673                             "invalid parameters for -c starting at '%s%s%s'",
674                             word, param != NULL ? "," : "",
675                             param != NULL ? param : "");
676                 }
677         }
678         free(dupparam);
679         shape->shape[0] = type;
680 }
681
682
683 /*
684  * Set the cursor's shape/type.
685  */
686
687 static void
688 set_cursor_type(char *param)
689 {
690         struct cshape shape;
691
692         /* Dry run to determine color, default and local flags. */
693         shape.shape[0] = 0;
694         shape.shape[1] = -1;
695         shape.shape[2] = -1;
696         parse_cursor_params(param, &shape);
697
698         /* Get the relevant old setting. */
699         if (ioctl(0, CONS_GETCURSORSHAPE, &shape) != 0) {
700                 revert();
701                 err(1, "ioctl(CONS_GETCURSORSHAPE)");
702         }
703
704         parse_cursor_params(param, &shape);
705         if (ioctl(0, CONS_SETCURSORSHAPE, &shape) != 0) {
706                 revert();
707                 err(1, "ioctl(CONS_SETCURSORSHAPE)");
708         }
709 }
710
711
712 /*
713  * Set the video mode.
714  */
715
716 static void
717 video_mode(int argc, char **argv, int *mode_index)
718 {
719         static struct {
720                 const char *name;
721                 unsigned long mode;
722                 unsigned long mode_num;
723         } modes[] = {
724                 { "80x25",        SW_TEXT_80x25,   M_TEXT_80x25 },
725                 { "80x30",        SW_TEXT_80x30,   M_TEXT_80x30 },
726                 { "80x43",        SW_TEXT_80x43,   M_TEXT_80x43 },
727                 { "80x50",        SW_TEXT_80x50,   M_TEXT_80x50 },
728                 { "80x60",        SW_TEXT_80x60,   M_TEXT_80x60 },
729                 { "132x25",       SW_TEXT_132x25,  M_TEXT_132x25 },
730                 { "132x30",       SW_TEXT_132x30,  M_TEXT_132x30 },
731                 { "132x43",       SW_TEXT_132x43,  M_TEXT_132x43 },
732                 { "132x50",       SW_TEXT_132x50,  M_TEXT_132x50 },
733                 { "132x60",       SW_TEXT_132x60,  M_TEXT_132x60 },
734                 { "VGA_40x25",    SW_VGA_C40x25,   M_VGA_C40x25 },
735                 { "VGA_80x25",    SW_VGA_C80x25,   M_VGA_C80x25 },
736                 { "VGA_80x30",    SW_VGA_C80x30,   M_VGA_C80x30 },
737                 { "VGA_80x50",    SW_VGA_C80x50,   M_VGA_C80x50 },
738                 { "VGA_80x60",    SW_VGA_C80x60,   M_VGA_C80x60 },
739 #ifdef SW_VGA_C90x25
740                 { "VGA_90x25",    SW_VGA_C90x25,   M_VGA_C90x25 },
741                 { "VGA_90x30",    SW_VGA_C90x30,   M_VGA_C90x30 },
742                 { "VGA_90x43",    SW_VGA_C90x43,   M_VGA_C90x43 },
743                 { "VGA_90x50",    SW_VGA_C90x50,   M_VGA_C90x50 },
744                 { "VGA_90x60",    SW_VGA_C90x60,   M_VGA_C90x60 },
745 #endif
746                 { "VGA_320x200",        SW_VGA_CG320,   M_CG320 },
747                 { "EGA_80x25",          SW_ENH_C80x25,  M_ENH_C80x25 },
748                 { "EGA_80x43",          SW_ENH_C80x43,  M_ENH_C80x43 },
749                 { "VESA_132x25",        SW_VESA_C132x25,M_VESA_C132x25 },
750                 { "VESA_132x43",        SW_VESA_C132x43,M_VESA_C132x43 },
751                 { "VESA_132x50",        SW_VESA_C132x50,M_VESA_C132x50 },
752                 { "VESA_132x60",        SW_VESA_C132x60,M_VESA_C132x60 },
753                 { "VESA_800x600",       SW_VESA_800x600,M_VESA_800x600 },
754                 { NULL, 0, 0 },
755         };
756
757         int new_mode_num = 0;
758         unsigned long mode = 0;
759         int cur_mode; 
760         int save_errno;
761         int size[3];
762         int i;
763
764         if (ioctl(0, CONS_GET, &cur_mode) < 0)
765                 err(1, "cannot get the current video mode");
766
767         /*
768          * Parse the video mode argument...
769          */
770
771         if (*mode_index < argc) {
772                 if (!strncmp(argv[*mode_index], "MODE_", 5)) {
773                         if (!isdigit(argv[*mode_index][5]))
774                                 errx(1, "invalid video mode number");
775
776                         new_mode_num = atoi(&argv[*mode_index][5]);
777                 } else {
778                         for (i = 0; modes[i].name != NULL; ++i) {
779                                 if (!strcmp(argv[*mode_index], modes[i].name)) {
780                                         mode = modes[i].mode;
781                                         new_mode_num = modes[i].mode_num;
782                                         break;
783                                 }
784                         }
785
786                         if (modes[i].name == NULL)
787                                 return;
788                         if (ioctl(0, mode, NULL) < 0) {
789                                 revert();
790                                 err(1, "cannot set videomode");
791                         }
792                         video_mode_changed = 1;
793                 }
794
795                 /*
796                  * Collect enough information about the new video mode...
797                  */
798
799                 new_mode_info.vi_mode = new_mode_num;
800
801                 if (ioctl(0, CONS_MODEINFO, &new_mode_info) == -1) {
802                         revert();
803                         err(1, "obtaining new video mode parameters");
804                 }
805
806                 if (mode == 0) {
807                         if (new_mode_num >= M_VESA_BASE)
808                                 mode = _IO('V', new_mode_num - M_VESA_BASE);
809                         else
810                                 mode = _IO('S', new_mode_num);
811                 }
812
813                 /*
814                  * Try setting the new mode.
815                  */
816
817                 if (ioctl(0, mode, NULL) == -1) {
818                         revert();
819                         err(1, "setting video mode");
820                 }
821                 video_mode_changed = 1;
822
823                 /*
824                  * For raster modes it's not enough to just set the mode.
825                  * We also need to explicitly set the raster mode.
826                  */
827
828                 if (new_mode_info.vi_flags & V_INFO_GRAPHICS) {
829                         /* font size */
830
831                         if (font_height == 0)
832                                 font_height = cur_info.console_info.font_size;
833
834                         size[2] = font_height;
835
836                         /* adjust columns */
837
838                         if ((vesa_cols * 8 > new_mode_info.vi_width) ||
839                             (vesa_cols <= 0)) {
840                                 size[0] = new_mode_info.vi_width / 8;
841                         } else {
842                                 size[0] = vesa_cols;
843                         }
844
845                         /* adjust rows */
846
847                         if ((vesa_rows * font_height > new_mode_info.vi_height) ||
848                             (vesa_rows <= 0)) {
849                                 size[1] = new_mode_info.vi_height /
850                                           font_height;
851                         } else {
852                                 size[1] = vesa_rows;
853                         }
854
855                         /* set raster mode */
856
857                         if (ioctl(0, KDRASTER, size)) {
858                                 save_errno = errno;
859                                 if (cur_mode >= M_VESA_BASE)
860                                         ioctl(0,
861                                             _IO('V', cur_mode - M_VESA_BASE),
862                                             NULL);
863                                 else
864                                         ioctl(0, _IO('S', cur_mode), NULL);
865                                 revert();
866                                 errno = save_errno;
867                                 err(1, "cannot activate raster display");
868                         }
869                 }
870
871                 /* Recover from mode setting forgetting colors. */
872                 fprintf(stderr, "\033[=%dF",
873                     cur_info.console_info.mv_norm.fore);
874                 fprintf(stderr, "\033[=%dG",
875                     cur_info.console_info.mv_norm.back);
876
877                 (*mode_index)++;
878         }
879 }
880
881
882 /*
883  * Return the number for a specified color name.
884  */
885
886 static int
887 get_color_number(char *color)
888 {
889         int i;
890
891         for (i=0; i<16; i++) {
892                 if (!strcmp(color, legal_colors[i]))
893                         return i;
894         }
895         return -1;
896 }
897
898
899 /*
900  * Set normal text and background colors.
901  */
902
903 static void
904 set_normal_colors(int argc, char **argv, int *_index)
905 {
906         int color;
907
908         if (*_index < argc && (color = get_color_number(argv[*_index])) != -1) {
909                 (*_index)++;
910                 fprintf(stderr, "\033[=%dF", color);
911                 if (*_index < argc
912                     && (color = get_color_number(argv[*_index])) != -1) {
913                         (*_index)++;
914                         fprintf(stderr, "\033[=%dG", color);
915                 }
916         }
917 }
918
919
920 /*
921  * Set reverse text and background colors.
922  */
923
924 static void
925 set_reverse_colors(int argc, char **argv, int *_index)
926 {
927         int color;
928
929         if ((color = get_color_number(argv[*(_index)-1])) != -1) {
930                 fprintf(stderr, "\033[=%dH", color);
931                 if (*_index < argc
932                     && (color = get_color_number(argv[*_index])) != -1) {
933                         (*_index)++;
934                         fprintf(stderr, "\033[=%dI", color);
935                 }
936         }
937 }
938
939
940 /*
941  * Switch to virtual terminal #arg.
942  */
943
944 static void
945 set_console(char *arg)
946 {
947         int n;
948
949         if(!arg || strspn(arg,"0123456789") != strlen(arg)) {
950                 revert();
951                 errx(1, "bad console number");
952         }
953
954         n = atoi(arg);
955
956         if (n < 1 || n > 16) {
957                 revert();
958                 errx(1, "console number out of range");
959         } else if (ioctl(0, VT_ACTIVATE, n) == -1) {
960                 revert();
961                 err(1, "switching vty");
962         }
963 }
964
965
966 /*
967  * Sets the border color.
968  */
969
970 static void
971 set_border_color(char *arg)
972 {
973         int color;
974
975         color = get_color_number(arg);
976         if (color == -1) {
977                 revert();
978                 errx(1, "invalid color '%s'", arg);
979         }
980         if (ioctl(0, KDSBORDER, color) != 0) {
981                 revert();
982                 err(1, "ioctl(KD_SBORDER)");
983         }
984 }
985
986 static void
987 set_mouse_char(char *arg)
988 {
989         struct mouse_info mouse;
990         long l;
991
992         l = strtol(arg, NULL, 0);
993
994         if ((l < 0) || (l > UCHAR_MAX - 3)) {
995                 revert();
996                 warnx("argument to -M must be 0 through %d", UCHAR_MAX - 3);
997                 return;
998         }
999
1000         mouse.operation = MOUSE_MOUSECHAR;
1001         mouse.u.mouse_char = (int)l;
1002
1003         if (ioctl(0, CONS_MOUSECTL, &mouse) == -1) {
1004                 revert();
1005                 err(1, "setting mouse character");
1006         }
1007 }
1008
1009
1010 /*
1011  * Show/hide the mouse.
1012  */
1013
1014 static void
1015 set_mouse(char *arg)
1016 {
1017         struct mouse_info mouse;
1018
1019         if (!strcmp(arg, "on")) {
1020                 mouse.operation = MOUSE_SHOW;
1021         } else if (!strcmp(arg, "off")) {
1022                 mouse.operation = MOUSE_HIDE;
1023         } else {
1024                 revert();
1025                 errx(1, "argument to -m must be either on or off");
1026         }
1027
1028         if (ioctl(0, CONS_MOUSECTL, &mouse) == -1) {
1029                 revert();
1030                 err(1, "%sing the mouse",
1031                      mouse.operation == MOUSE_SHOW ? "show" : "hid");
1032         }
1033 }
1034
1035
1036 static void
1037 set_lockswitch(char *arg)
1038 {
1039         int data;
1040
1041         if (!strcmp(arg, "off")) {
1042                 data = 0x01;
1043         } else if (!strcmp(arg, "on")) {
1044                 data = 0x02;
1045         } else {
1046                 revert();
1047                 errx(1, "argument to -S must be either on or off");
1048         }
1049
1050         if (ioctl(0, VT_LOCKSWITCH, &data) == -1) {
1051                 revert();
1052                 err(1, "turning %s vty switching",
1053                      data == 0x01 ? "off" : "on");
1054         }
1055 }
1056
1057
1058 /*
1059  * Return the adapter name for a specified type.
1060  */
1061
1062 static const char
1063 *adapter_name(int type)
1064 {
1065     static struct {
1066         int type;
1067         const char *name;
1068     } names[] = {
1069         { KD_MONO,      "MDA" },
1070         { KD_HERCULES,  "Hercules" },
1071         { KD_CGA,       "CGA" },
1072         { KD_EGA,       "EGA" },
1073         { KD_VGA,       "VGA" },
1074         { KD_TGA,       "TGA" },
1075         { -1,           "Unknown" },
1076     };
1077
1078     int i;
1079
1080     for (i = 0; names[i].type != -1; ++i)
1081         if (names[i].type == type)
1082             break;
1083     return names[i].name;
1084 }
1085
1086
1087 /*
1088  * Show active VTY, ie current console number.
1089  */
1090
1091 static void
1092 show_active_info(void)
1093 {
1094
1095         printf("%d\n", cur_info.active_vty);
1096 }
1097
1098
1099 /*
1100  * Show graphics adapter information.
1101  */
1102
1103 static void
1104 show_adapter_info(void)
1105 {
1106         struct video_adapter_info ad;
1107
1108         ad.va_index = 0;
1109
1110         if (ioctl(0, CONS_ADPINFO, &ad) == -1) {
1111                 revert();
1112                 err(1, "obtaining adapter information");
1113         }
1114
1115         printf("fb%d:\n", ad.va_index);
1116         printf("    %.*s%d, type:%s%s (%d), flags:0x%x\n",
1117                (int)sizeof(ad.va_name), ad.va_name, ad.va_unit,
1118                (ad.va_flags & V_ADP_VESA) ? "VESA " : "",
1119                adapter_name(ad.va_type), ad.va_type, ad.va_flags);
1120         printf("    initial mode:%d, current mode:%d, BIOS mode:%d\n",
1121                ad.va_initial_mode, ad.va_mode, ad.va_initial_bios_mode);
1122         printf("    frame buffer window:0x%zx, buffer size:0x%zx\n",
1123                ad.va_window, ad.va_buffer_size);
1124         printf("    window size:0x%zx, origin:0x%x\n",
1125                ad.va_window_size, ad.va_window_orig);
1126         printf("    display start address (%d, %d), scan line width:%d\n",
1127                ad.va_disp_start.x, ad.va_disp_start.y, ad.va_line_width);
1128         printf("    reserved:0x%zx\n", ad.va_unused0);
1129 }
1130
1131
1132 /*
1133  * Show video mode information.
1134  */
1135
1136 static void
1137 show_mode_info(void)
1138 {
1139         char buf[80];
1140         struct video_info info;
1141         int c;
1142         int mm;
1143         int mode;
1144
1145         printf("    mode#     flags   type    size       "
1146                "font      window      linear buffer\n");
1147         printf("---------------------------------------"
1148                "---------------------------------------\n");
1149
1150         memset(&info, 0, sizeof(info));
1151         for (mode = 0; mode <= M_VESA_MODE_MAX; ++mode) {
1152                 info.vi_mode = mode;
1153                 if (ioctl(0, CONS_MODEINFO, &info))
1154                         continue;
1155                 if (info.vi_mode != mode)
1156                         continue;
1157                 if (info.vi_width == 0 && info.vi_height == 0 &&
1158                     info.vi_cwidth == 0 && info.vi_cheight == 0)
1159                         continue;
1160
1161                 printf("%3d (0x%03x)", mode, mode);
1162                 printf(" 0x%08x", info.vi_flags);
1163                 if (info.vi_flags & V_INFO_GRAPHICS) {
1164                         c = 'G';
1165
1166                         if (info.vi_mem_model == V_INFO_MM_PLANAR)
1167                                 snprintf(buf, sizeof(buf), "%dx%dx%d %d",
1168                                     info.vi_width, info.vi_height, 
1169                                     info.vi_depth, info.vi_planes);
1170                         else {
1171                                 switch (info.vi_mem_model) {
1172                                 case V_INFO_MM_PACKED:
1173                                         mm = 'P';
1174                                         break;
1175                                 case V_INFO_MM_DIRECT:
1176                                         mm = 'D';
1177                                         break;
1178                                 case V_INFO_MM_CGA:
1179                                         mm = 'C';
1180                                         break;
1181                                 case V_INFO_MM_HGC:
1182                                         mm = 'H';
1183                                         break;
1184                                 case V_INFO_MM_VGAX:
1185                                         mm = 'V';
1186                                         break;
1187                                 default:
1188                                         mm = ' ';
1189                                         break;
1190                                 }
1191                                 snprintf(buf, sizeof(buf), "%dx%dx%d %c",
1192                                     info.vi_width, info.vi_height, 
1193                                     info.vi_depth, mm);
1194                         }
1195                 } else {
1196                         c = 'T';
1197
1198                         snprintf(buf, sizeof(buf), "%dx%d",
1199                                  info.vi_width, info.vi_height);
1200                 }
1201
1202                 printf(" %c %-15s", c, buf);
1203                 snprintf(buf, sizeof(buf), "%dx%d", 
1204                          info.vi_cwidth, info.vi_cheight); 
1205                 printf(" %-5s", buf);
1206                 printf(" 0x%05zx %2dk %2dk", 
1207                        info.vi_window, (int)info.vi_window_size/1024, 
1208                        (int)info.vi_window_gran/1024);
1209                 printf(" 0x%08zx %dk\n",
1210                        info.vi_buffer, (int)info.vi_buffer_size/1024);
1211         }
1212 }
1213
1214
1215 static void
1216 show_info(char *arg)
1217 {
1218
1219         if (!strcmp(arg, "active")) {
1220                 show_active_info();
1221         } else if (!strcmp(arg, "adapter")) {
1222                 show_adapter_info();
1223         } else if (!strcmp(arg, "mode")) {
1224                 show_mode_info();
1225         } else {
1226                 revert();
1227                 errx(1, "argument to -i must be active, adapter, or mode");
1228         }
1229 }
1230
1231
1232 static void
1233 test_frame(void)
1234 {
1235         vid_info_t info;
1236         const char *bg, *sep;
1237         int i, fore;
1238
1239         info.size = sizeof(info);
1240         if (ioctl(0, CONS_GETINFO, &info) == -1)
1241                 err(1, "getting console information");
1242
1243         fore = 15;
1244         if (info.mv_csz < 80) {
1245                 bg = "BG";
1246                 sep = " ";
1247         } else {
1248                 bg = "BACKGROUND";
1249                 sep = "    ";
1250         }
1251
1252         fprintf(stdout, "\033[=0G\n\n");
1253         for (i=0; i<8; i++) {
1254                 fprintf(stdout,
1255                     "\033[=%dF\033[=0G%2d \033[=%dF%-7s%s"
1256                     "\033[=%dF\033[=0G%2d \033[=%dF%-12s%s"
1257                     "\033[=%dF%2d \033[=%dG%s\033[=0G%s"
1258                     "\033[=%dF%2d \033[=%dG%s\033[=0G\n",
1259                     fore, i, i, legal_colors[i], sep,
1260                     fore, i + 8, i + 8, legal_colors[i + 8], sep,
1261                     fore, i, i, bg, sep,
1262                     fore, i + 8, i + 8, bg);
1263         }
1264         fprintf(stdout, "\033[=%dF\033[=%dG\033[=%dH\033[=%dI\n",
1265                 info.mv_norm.fore, info.mv_norm.back,
1266                 info.mv_rev.fore, info.mv_rev.back);
1267 }
1268
1269
1270 /*
1271  * Snapshot the video memory of that terminal, using the CONS_SCRSHOT
1272  * ioctl, and writes the results to stdout either in the special
1273  * binary format (see manual page for details), or in the plain
1274  * text format.
1275  */
1276
1277 static void
1278 dump_screen(int mode, int opt)
1279 {
1280         scrshot_t shot;
1281         vid_info_t info;
1282
1283         info.size = sizeof(info);
1284         if (ioctl(0, CONS_GETINFO, &info) == -1) {
1285                 revert();
1286                 err(1, "getting console information");
1287         }
1288
1289         shot.x = shot.y = 0;
1290         shot.xsize = info.mv_csz;
1291         shot.ysize = info.mv_rsz;
1292         if (opt == DUMP_ALL)
1293                 shot.ysize += info.mv_hsz;
1294
1295         shot.buf = alloca(shot.xsize * shot.ysize * sizeof(u_int16_t));
1296         if (shot.buf == NULL) {
1297                 revert();
1298                 errx(1, "failed to allocate memory for dump");
1299         }
1300
1301         if (ioctl(0, CONS_SCRSHOT, &shot) == -1) {
1302                 revert();
1303                 err(1, "dumping screen");
1304         }
1305
1306         if (mode == DUMP_FMT_RAW) {
1307                 printf("SCRSHOT_%c%c%c%c", DUMP_FMT_REV, 2,
1308                        shot.xsize, shot.ysize);
1309
1310                 fflush(stdout);
1311
1312                 write(STDOUT_FILENO, shot.buf,
1313                       shot.xsize * shot.ysize * sizeof(u_int16_t));
1314         } else {
1315                 char *line;
1316                 int x, y;
1317                 u_int16_t ch;
1318
1319                 line = alloca(shot.xsize + 1);
1320
1321                 if (line == NULL) {
1322                         revert();
1323                         errx(1, "failed to allocate memory for line buffer");
1324                 }
1325
1326                 for (y = 0; y < shot.ysize; y++) {
1327                         for (x = 0; x < shot.xsize; x++) {
1328                                 ch = shot.buf[x + (y * shot.xsize)];
1329                                 ch &= 0xff;
1330
1331                                 if (isprint(ch) == 0)
1332                                         ch = ' ';
1333
1334                                 line[x] = (char)ch;
1335                         }
1336
1337                         /* Trim trailing spaces */
1338
1339                         do {
1340                                 line[x--] = '\0';
1341                         } while (line[x] == ' ' && x != 0);
1342
1343                         puts(line);
1344                 }
1345
1346                 fflush(stdout);
1347         }
1348 }
1349
1350
1351 /*
1352  * Set the console history buffer size.
1353  */
1354
1355 static void
1356 set_history(char *opt)
1357 {
1358         int size;
1359
1360         size = atoi(opt);
1361
1362         if ((*opt == '\0') || size < 0) {
1363                 revert();
1364                 errx(1, "argument must not be less than zero");
1365         }
1366
1367         if (ioctl(0, CONS_HISTORY, &size) == -1) {
1368                 revert();
1369                 err(1, "setting history buffer size");
1370         }
1371 }
1372
1373
1374 /*
1375  * Clear the console history buffer.
1376  */
1377
1378 static void
1379 clear_history(void)
1380 {
1381         if (ioctl(0, CONS_CLRHIST) == -1) {
1382                 revert();
1383                 err(1, "clearing history buffer");
1384         }
1385 }
1386
1387 static void
1388 set_terminal_mode(char *arg)
1389 {
1390
1391         if (strcmp(arg, "xterm") == 0)
1392                 fprintf(stderr, "\033[=T");
1393         else if (strcmp(arg, "cons25") == 0)
1394                 fprintf(stderr, "\033[=1T");
1395 }
1396
1397
1398 int
1399 main(int argc, char **argv)
1400 {
1401         char    *font, *type, *termmode;
1402         const char *opts;
1403         int     dumpmod, dumpopt, opt;
1404
1405         vt4_mode = is_vt4();
1406
1407         init();
1408
1409         dumpmod = 0;
1410         dumpopt = DUMP_FBF;
1411         termmode = NULL;
1412         if (vt4_mode)
1413                 opts = "b:Cc:fg:h:Hi:M:m:pPr:S:s:T:t:x";
1414         else
1415                 opts = "b:Cc:dfg:h:Hi:l:LM:m:pPr:S:s:T:t:x";
1416
1417         while ((opt = getopt(argc, argv, opts)) != -1)
1418                 switch(opt) {
1419                 case 'b':
1420                         set_border_color(optarg);
1421                         break;
1422                 case 'C':
1423                         clear_history();
1424                         break;
1425                 case 'c':
1426                         set_cursor_type(optarg);
1427                         break;
1428                 case 'd':
1429                         if (vt4_mode)
1430                                 break;
1431                         print_scrnmap();
1432                         break;
1433                 case 'f':
1434                         optarg = nextarg(argc, argv, &optind, 'f', 0);
1435                         if (optarg != NULL) {
1436                                 font = nextarg(argc, argv, &optind, 'f', 0);
1437
1438                                 if (font == NULL) {
1439                                         type = NULL;
1440                                         font = optarg;
1441                                 } else
1442                                         type = optarg;
1443
1444                                 load_font(type, font);
1445                         } else {
1446                                 if (!vt4_mode)
1447                                         usage(); /* Switch syscons to ROM? */
1448
1449                                 load_default_vt4font();
1450                         }
1451                         break;
1452                 case 'g':
1453                         if (sscanf(optarg, "%dx%d",
1454                             &vesa_cols, &vesa_rows) != 2) {
1455                                 revert();
1456                                 warnx("incorrect geometry: %s", optarg);
1457                                 usage();
1458                         }
1459                         break;
1460                 case 'h':
1461                         set_history(optarg);
1462                         break;
1463                 case 'H':
1464                         dumpopt = DUMP_ALL;
1465                         break;
1466                 case 'i':
1467                         show_info(optarg);
1468                         break;
1469                 case 'l':
1470                         if (vt4_mode)
1471                                 break;
1472                         load_scrnmap(optarg);
1473                         break;
1474                 case 'L':
1475                         if (vt4_mode)
1476                                 break;
1477                         load_default_scrnmap();
1478                         break;
1479                 case 'M':
1480                         set_mouse_char(optarg);
1481                         break;
1482                 case 'm':
1483                         set_mouse(optarg);
1484                         break;
1485                 case 'p':
1486                         dumpmod = DUMP_FMT_RAW;
1487                         break;
1488                 case 'P':
1489                         dumpmod = DUMP_FMT_TXT;
1490                         break;
1491                 case 'r':
1492                         set_reverse_colors(argc, argv, &optind);
1493                         break;
1494                 case 'S':
1495                         set_lockswitch(optarg);
1496                         break;
1497                 case 's':
1498                         set_console(optarg);
1499                         break;
1500                 case 'T':
1501                         if (strcmp(optarg, "xterm") != 0 &&
1502                             strcmp(optarg, "cons25") != 0)
1503                                 usage();
1504                         termmode = optarg;
1505                         break;
1506                 case 't':
1507                         set_screensaver_timeout(optarg);
1508                         break;
1509                 case 'x':
1510                         hex = 1;
1511                         break;
1512                 default:
1513                         usage();
1514                 }
1515
1516         if (dumpmod != 0)
1517                 dump_screen(dumpmod, dumpopt);
1518         video_mode(argc, argv, &optind);
1519         set_normal_colors(argc, argv, &optind);
1520
1521         if (optind < argc && !strcmp(argv[optind], "show")) {
1522                 test_frame();
1523                 optind++;
1524         }
1525
1526         if (termmode != NULL)
1527                 set_terminal_mode(termmode);
1528
1529         if ((optind != argc) || (argc == 1))
1530                 usage();
1531         return (0);
1532 }
1533